How WaKiApps started their button or icon journey

Summary

We require 5 simple white icons for one of our iPhone Applications

Company name

WaKi Apps

What inspires you and how do you envision the design for your business?

We are developing applications for the iPhone and would like a series of graphics created for our apps. For our first contest, we require icons that represent the following (interpretations can be literal or symbolic and we'll leave the choice open for the designers) :
- Doctor - City skyline - Bank - Aeroplane/Air flight - Business Portfolio
We have many applications being developed in the pipeline so we're looking at building a solid and continuing relationship with the best designers. We are looking for designers who can think outside the box and work quickly without compromising quality.

We require these icons urgently and if we're happy with early entries, we will close the contest early. We will endeavour to give as much feedback as quickly possible.

Wants

We want the icons to be simple, clear, stylish and be thematically consistent with each other, easily getting across the categories that they're representing.
- Icons are to be White on a transparent background.
- Dimensions of the icons are to be 30x30pixels.
- We require each of the icons as photoshop and illustrator files with un-flattened layers on a transparent background as well as PNG.
- All icons must be original and not previously created for any other iPhone, mobile, or web application.
- Use Anti-aliasing
- Icons must also not look similar to any of the Apple's standard iPhone icons or buttons which you can see on pages 103-105 of this document:http://developer.apple.com/iphone/library/documentation/UserExperience/Conceptual/MobileHIG/MobileHIG.pdf
(You may need to sign up for free as an iphone developer on the Apple's site to be able to view this document - link below)https://connect.apple.com/cgi-bin/W…ADCLOG-NEX

Don't want

- Any text or letters within the icons as there will be text underneath the icon.
- Any text for each of the icons.
- Icons must not be in in color.
- Icon should NOT have a drop shadow.
- Icon should NOT be on a background of a button and we do not require any glass/bubble effects
- For the Bank icon, we don't want a piggy bank.